text: /* GStreamer
   * (c) 2010, 2012 Alexander Saprykin <xelfium@gmail.com>
   *
   * gsttoc.h: generic TOC API declaration
   *
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Library General Public
   * License as published by the Free Software Foundation; either
   * version 2 of the License, or (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   * Library General Public License for more details.
   *
   * You should have received a copy of the GNU Library General Public
   * License along with this library; if not, write to the
   * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
   * Boston, MA 02110-1301, USA.
   */
  
  #ifndef __GST_TOC_H__
  #define __GST_TOC_H__
  
  #include <gst/gstconfig.h>
  #include <gst/gstminiobject.h>
  #include <gst/gststructure.h>
  #include <gst/gsttaglist.h>
  #include <gst/gstformat.h>
  
  G_BEGIN_DECLS
  
  GST_API GType _gst_toc_type;
  
  GST_API GType _gst_toc_entry_type;
  
  #define GST_TYPE_TOC (_gst_toc_type)
  #define GST_TYPE_TOC_ENTRY (_gst_toc_entry_type)
  
  typedef struct _GstTocEntry GstTocEntry;
  typedef struct _GstToc GstToc;
  
  /**
   * GstTocScope:
   * @GST_TOC_SCOPE_GLOBAL: global TOC representing all selectable options
   *     (this is what applications are usually interested in)
   * @GST_TOC_SCOPE_CURRENT: TOC for the currently active/selected stream
   *     (this is a TOC representing the current stream from start to EOS,
   *     and is what a TOC writer / muxer is usually interested in; it will
   *     usually be a subset of the global TOC, e.g. just the chapters of
   *     the current title, or the chapters selected for playback from the
   *     current title)
   *
   * The scope of a TOC.
   */
  typedef enum {
    GST_TOC_SCOPE_GLOBAL = 1,
    GST_TOC_SCOPE_CURRENT = 2
  } GstTocScope;
  
  /**
   * GstTocEntryType:
   * @GST_TOC_ENTRY_TYPE_ANGLE: entry is an angle (i.e. an alternative)
   * @GST_TOC_ENTRY_TYPE_VERSION: entry is a version (i.e. alternative)
   * @GST_TOC_ENTRY_TYPE_EDITION: entry is an edition (i.e. alternative)
   * @GST_TOC_ENTRY_TYPE_INVALID: invalid entry type value
   * @GST_TOC_ENTRY_TYPE_TITLE: entry is a title (i.e. a part of a sequence)
   * @GST_TOC_ENTRY_TYPE_TRACK: entry is a track (i.e. a part of a sequence)
   * @GST_TOC_ENTRY_TYPE_CHAPTER: entry is a chapter (i.e. a part of a sequence)
   *
   * The different types of TOC entries (see #GstTocEntry).
   *
   * There are two types of TOC entries: alternatives or parts in a sequence.
   */
  typedef enum {
    GST_TOC_ENTRY_TYPE_ANGLE       = -3,
    GST_TOC_ENTRY_TYPE_VERSION     = -2,
    GST_TOC_ENTRY_TYPE_EDITION     = -1,
    GST_TOC_ENTRY_TYPE_INVALID     = 0,
    GST_TOC_ENTRY_TYPE_TITLE       = 1,
    GST_TOC_ENTRY_TYPE_TRACK       = 2,
    GST_TOC_ENTRY_TYPE_CHAPTER     = 3,
  } GstTocEntryType;
  
  /**
   * GST_TOC_ENTRY_TYPE_IS_ALTERNATIVE:
   * @entry_type: The #GstTocEntryType from a #GstTocEntry
   *
   * Checks if @entry_type indicates that its #GstTocEntry is an alternative.
   */
  #define GST_TOC_ENTRY_TYPE_IS_ALTERNATIVE(entry_type)  (entry_type < 0)
  
  /**
   * GST_TOC_ENTRY_TYPE_IS_SEQUENCE:
   * @entry_type: The #GstTocEntryType from a #GstTocEntry
   *
   * Checks if @entry_type indicates that its #GstTocEntry is a sequence.
   */
  #define GST_TOC_ENTRY_TYPE_IS_SEQUENCE(entry_type)     (entry_type > 0)
  
  /**
   * GstTocLoopType:
   * @GST_TOC_LOOP_NONE: single forward playback
   * @GST_TOC_LOOP_FORWARD: repeat forward
   * @GST_TOC_LOOP_REVERSE: repeat backward
   * @GST_TOC_LOOP_PING_PONG: repeat forward and backward
   *
   * How a #GstTocEntry should be repeated. By default, entries are played a
   * single time.
   *
   * Since: 1.4
   */
  typedef enum {
    GST_TOC_LOOP_NONE = 0,
    GST_TOC_LOOP_FORWARD,
    GST_TOC_LOOP_REVERSE,
    GST_TOC_LOOP_PING_PONG
  } GstTocLoopType;
  
  /**
   * GST_TOC_REPEAT_COUNT_INFINITE:
   *
   * Special value for the repeat_count set in gst_toc_entry_set_loop() or
   * returned by gst_toc_entry_set_loop() to indicate infinite looping.
   *
   * Since: 1.4
   */
  #define GST_TOC_REPEAT_COUNT_INFINITE (-1)
  
  /* functions to return type structures */
  
  GST_API
  GType           gst_toc_get_type                (void);
  
  GST_API
  GType           gst_toc_entry_get_type          (void);
  
  /* functions to create, ref and unref/free TOCs */
  
  GST_API
  GstToc *           gst_toc_new                     (GstTocScope scope);
  
  GST_API
  GstTocScope        gst_toc_get_scope               (const GstToc *toc);
  
  GST_API
  void               gst_toc_set_tags                (GstToc *toc, GstTagList * tags);
  
  GST_API
  void               gst_toc_merge_tags              (GstToc *toc, GstTagList *tags, GstTagMergeMode mode);
  
  GST_API
  GstTagList *       gst_toc_get_tags                (const GstToc *toc);
  
  GST_API
  void               gst_toc_append_entry            (GstToc *toc, GstTocEntry *entry);
  
  GST_API
  GList *            gst_toc_get_entries             (const GstToc *toc);
  
  GST_API
  void               gst_toc_dump                    (GstToc *toc);
  
  #define gst_toc_ref(toc)            (GstToc*)gst_mini_object_ref(GST_MINI_OBJECT_CAST(toc))
  #define gst_toc_unref(toc)          gst_mini_object_unref(GST_MINI_OBJECT_CAST(toc))
  #define gst_toc_copy(toc)           (GstToc*)gst_mini_object_copy(GST_MINI_OBJECT_CAST(toc))
  #define gst_toc_make_writable(toc)  (GstToc*)gst_mini_object_make_writable(GST_MINI_OBJECT_CAST(toc))
  
  /* functions to create, ref and unref/free TOC entries */
  
  GST_API
  GstTocEntry *   gst_toc_entry_new               (GstTocEntryType type, const gchar *uid);
  
  #define gst_toc_entry_ref(entry)            (GstTocEntry*)gst_mini_object_ref(GST_MINI_OBJECT_CAST(entry))
  #define gst_toc_entry_unref(entry)          gst_mini_object_unref(GST_MINI_OBJECT_CAST(entry))
  #define gst_toc_entry_copy(entry)           (GstTocEntry*)gst_mini_object_copy(GST_MINI_OBJECT_CAST(entry))
  #define gst_toc_entry_make_writable(entry)  (GstTocEntry*)gst_mini_object_make_writable(GST_MINI_OBJECT_CAST(entry))
  
  GST_API
  GstTocEntry *      gst_toc_find_entry                    (const GstToc *toc, const gchar *uid);
  
  GST_API
  GstTocEntryType    gst_toc_entry_get_entry_type          (const GstTocEntry *entry);
  
  GST_API
  const gchar *      gst_toc_entry_get_uid                 (const GstTocEntry *entry);
  
  GST_API
  void               gst_toc_entry_append_sub_entry        (GstTocEntry *entry, GstTocEntry *subentry);
  
  GST_API
  GList *            gst_toc_entry_get_sub_entries         (const GstTocEntry *entry);
  
  GST_API
  void               gst_toc_entry_set_tags                (GstTocEntry *entry, GstTagList *tags);
  
  GST_API
  void               gst_toc_entry_merge_tags              (GstTocEntry *entry, GstTagList *tags, GstTagMergeMode mode);
  
  GST_API
  GstTagList *       gst_toc_entry_get_tags                (const GstTocEntry *entry);
  
  GST_API
  gboolean           gst_toc_entry_is_alternative          (const GstTocEntry *entry);
  
  GST_API
  gboolean           gst_toc_entry_is_sequence             (const GstTocEntry *entry);
  
  GST_API
  void               gst_toc_entry_set_start_stop_times    (GstTocEntry *entry, gint64 start, gint64 stop);
  
  GST_API
  gboolean           gst_toc_entry_get_start_stop_times    (const GstTocEntry *entry, gint64 *start, gint64 *stop);
  
  GST_API
  void               gst_toc_entry_set_loop                (GstTocEntry *entry, GstTocLoopType loop_type, gint repeat_count);
  
  GST_API
  gboolean           gst_toc_entry_get_loop                (const GstTocEntry *entry, GstTocLoopType *loop_type, gint *repeat_count);
  
  GST_API
  GstToc *           gst_toc_entry_get_toc                 (GstTocEntry *entry);
  
  GST_API
  GstTocEntry *      gst_toc_entry_get_parent              (GstTocEntry *entry);
  
  
  GST_API
  const gchar *      gst_toc_entry_type_get_nick     (GstTocEntryType type);
  
  static inline void
  _gst_autoptr_toc_unref (GstToc *toc)
  {
    gst_toc_unref (toc);
  }
  
  static inline void
  _gst_autoptr_toc_entry_unref (GstTocEntry *entry)
  {
    gst_toc_entry_unref (entry);
  }
  
  G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstToc, _gst_autoptr_toc_unref)
  G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstTocEntry, _gst_autoptr_toc_entry_unref)
  
  G_END_DECLS
  
  #endif /* __GST_TOC_H__ */
  
  